Socio-demographic and clinical data in participants that were divided into two groups with high versus low alcohol days x alcohol units index (≥ 10.4 versus < 10.4)

VariablesAlcohol indexF/χ2dfP value
Low (< 10.4, n = 71)High (≥ 10.4, n = 35)
Age (years)a29.8 (6.9)29.2 (6.6)0.1511/1040.699
Gender (female/male)16/552/334.7110.030*
Marital status (single/married/divorced)35/26/1020/11/40.5920.74
Income (baht)a16,338 (21,487)10,500 (5,579)2.491/1040.118
Average alcohol drinks per daya1.3 (4.5)17.9 (9.9)143.211/104< 0.001***
Alcohol day x unitsa1.2 (2.5)128.7 (122.4)77.701/104< 0.001***
SDS total scorea5.3 (3.0)4.6 (3.1)1.171/1040.282
Age at onset of MA (years)a18.8 (4.7)17.9 (3.5)0.891/1040.347
Days of MA use in last montha17.5 (10.2)14.8 (10.1)1.591/1040.210
Days of MA use per month, heaviest usea24.1 (8.3)19.4 (11.0)5.971/1040.016*
Dysthymia (no/yes)62/930/50.0511.000
Anxiety disorder (no/yes)66/528/73.9210.058
MA-induced psychotic (no/yes)41/3021/140.0510.825
Antisocial personality (no/yes)62/928/70.9810.322
Opioid use (no/yes)69/233/20.5410.597
Cannabis use (no/yes)69/429/63.6310.078
Nicotine use (no/yes)21/5013/220.6210.433
Mitragyna speciosa use (no/yes)65/631/40.2410.727
Alcohol dependence (no/yes)49/2212/2311.5710.001**

a Data are shown as mean [standard deviation (SD)]. F: results of ANOVA; χ2: results of analyses of contingence tables; df: degree of freedom. * P < 0.05; ** P < 0.01; *** P < 0.001